Leszka M. Ivan Božilov, Bălgarskata archiepiskopija XI-XII vek. Spisăkăt na bălgarskite archiepiskopi, IK „Gutenberg” Sofija 2011, ss. 159. BP [Internet]. 2012 Jan. 1 [cited 2024 May 7];19:316-8. Available from: https://pressto.amu.edu.pl/index.php/bp/article/view/1958